<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <p>{{title}}</p>
        <button @click="reversedText">逆转世界</button>
    </div>

    <script src="./vue.js"></script>
    <script>

        var app = new Vue({
            el: '#app',
            data: {
                title: 'Hello,World'
            },
            methods: {
                reversedText() {
                this.title = this.title.split('').reverse().join('');
                }
            }
        })
    </script>
</body>

</html>